#669D66
Closest named color: Moss (#769958). oklch(64.3% 0.099 144.3), rgb(102, 157, 102).
Aa
Black text reads best on this color (6.57:1).
About this color
#669D66 is a medium-light, moderately saturated green. In OKLCH its lightness is 64%, its chroma 0.099 and its hue 144°. Its hue sits between the warm and cool halves of the wheel. The nearest named color is Moss (#769958), ΔE 0.022 away. Black text reads best on it, at 6.57:1.
| Hue family | Greens |
| Lightness | medium-light (64%) |
| Chroma | moderately saturated (0.099) |
| Temperature | in between |
| Nearest name | Moss (#769958) |
| Black text | 6.57:1 |
| White text | 3.19:1 |
Values
| HEX | #669D66 |
| RGB | rgb(102, 157, 102) |
| HSL | hsl(120, 22%, 51%) |
| OKLCH | oklch(64.3% 0.099 144.3) |
Contrast
WCAG 2 contrast ratios are the conformance target: AA needs 4.5:1 for body text and 3:1 for large text, AAA needs 7:1. APCA Lc values are supplementary guidance from the WCAG 3 drafts.
| Pair | WCAG 2 | Result | APCA | APCA guidance |
|---|---|---|---|---|
| White text on #669D66 | 3.19:1 | AA large text | Lc -64.4 | Content text, not long reading |
| Black text on #669D66 | 6.57:1 | AA | Lc 45.1 | Large or bold text, headings |
| #669D66 text on white | 3.19:1 | AA large text | Lc 59.0 | Large or bold text, headings |
| #669D66 text on black | 6.57:1 | AA | Lc -42.7 | Non-text elements, placeholder text |
Tints and shades
A 50–950 scale built in OKLCH: the hue is held, lightness follows a Tailwind v4-like curve, and every step is kept inside the sRGB gamut. This color sits at step 500.
-
Step 50
50
#F3F7F3
oklch(97.2% 0.007 145.5)
-
Step 100
100
#E4ECE4
oklch(93.5% 0.014 145.5)
-
Step 200
200
#CFDECE
oklch(88.5% 0.027 143.6)
-
Step 300
300
#AEC9AD
oklch(80.8% 0.049 144.2)
-
Step 400
400
#83AE82
oklch(70.8% 0.078 144.1)
-
Step 500
500 (this color)
#669D66
oklch(64.3% 0.099 144.3)
-
Step 600
600
#488449
oklch(55.7% 0.109 144.3)
-
Step 700
700
#396F3A
oklch(49% 0.1 144.2)
-
Step 800
800
#305B30
oklch(42.8% 0.084 143.9)
-
Step 900
900
#2B4B2B
oklch(37.9% 0.065 144.1)
-
Step 950
950
#192C19
oklch(27% 0.043 144.3)
#669D66 with color blindness
Simulated with the Machado et al. (2009) model. ΔE is how far the color moves: below about 0.02 you would not notice a change.
| Vision | Seen as | Shift (ΔE) |
|---|---|---|
| Protanopia (no red cones) | #9F9362 | 0.077 |
| Deuteranopia (no green cones) | #978E69 | 0.075 |
| Tritanopia (no blue cones) | #609A8F | 0.062 |
| Achromatopsia (no color) | #909090 | 0.100 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #669D66
#669D66
oklch(64.3% 0.099 144.3)
- #AB78AF
#AB78AF
oklch(64.3% 0.099 324.2)
Analogous
Neighbouring hues, 30° either side.
Split complementary
The two hues beside the complement (150° and 210°).
Triadic
Three hues spaced 120° apart.
Palettes with this color
Curated palettes that contain a color within ΔE 0.04 (OKLab) of #669D66, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Moss #769958 ΔE 0.022
- Drab Green #749551 ΔE 0.029
- Muted Green #5FA052 ΔE 0.031
- Flat Green #699D4C ΔE 0.031
- Off Green #6BA353 ΔE 0.033
- Dull Green #74A662 ΔE 0.034
- Dusty Green #76A973 ΔE 0.042
- Tea #65AB7C ΔE 0.042
Use #669D66 in your product
Turn it into light and dark UI roles checked for contrast, then export to Tailwind v4, shadcn/ui, CSS or design tokens.